Finding the Fourth Proportional to 142,939.96, 197,192.46 and 89,238.22

Step by Step Solution

1. Step 1: Write the proportion equation
   142,939.96 : 197,192.46 = 89,238.22 : x
2. Step 2: Convert to fraction form
   142,939.96/197,192.46 = 89,238.22/x
3. Step 3: Cross multiply
   142,939.96x = 197,192.46 × 89,238.22
4. Step 4: Simplify right side
   142,939.96x = 17,597,104,127.82
5. Step 5: Solve for x
   x = 17,597,104,127.82/142,939.96
6. Step 6: Final answer
   x = 123,108.36